I gave this book as a little graduation gift to my 8th graders when they graduated. We did some of the puzzles/riddles in math class. This book is good for 5th-8th graders, or any age logic/puzzle nerd who likes figuring things out from clues. An example: UNCLIMBED: Why has no one climbed the largest known extinct volcano? HINT: It is not underwater; it is clearly visible above ground. It would be very difficult to climb. ANSWER: The largest-known extinct volcano is Mons Olympus on Mars.

Books for the smallest room in the house... That generate BIG sales It's clear--people everywhere are sitting and solving! That's why more than 110,000 copies of this amazing series have nearly jumped out of stores. With their amusing shape, great content, and popular price, these compilations are a must-have on every puzzler's shelf. And the quality of the problems, games, and trickery is absolutely superb and fabulously diverse. Go for great word searches, stimulating criss-cross puzzles, brilliant brainteasers; cunning logic games, cannily challenging IQ Tests, mysterious mathamatricks, and lots more.